2 layers50.8 × 50.8 mm
Lk201ps2
pkoning2/lk201emu
Emulate DEC LK201 keyboard using a standard PC USB keyboard
17 parts56BSD-2-Clause
2 layers50.8 × 38.1 mm
Lk201
pkoning2/lk201emu56Emulate DEC LK201 keyboard using a standard PC USB keyboard
- Size
- 50.8 × 38.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 19
- Nets
- 24
- Pads
- 65
- Tracks, vias
- 118, 0
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 20 Jun 2020
- Updated
- 11 Aug 2021
Overview
Lk201 is an open-source printed circuit board by pkoning2, from the pkoning2/lk201emu repository on GitHub, published under the BSD-2-Clause licence. It is a 2-layer board of 50.8 × 38.1 mm with 19 parts on 24 nets, routed with 118 tracks and 0 vias.
It is built around the ICL3232CPZ and L78L05CZ. Its parts include 7 capacitors, 3 ICs, 2 resistors, 1 transistor and 1 connector. It belongs with the keyboards and input boards of this library.
Main components
2
ICL3232CPZ
PDIP-160.3mA 0℃~+70℃ 2 2 250Kbps 3V~5.5V Transceiver Yes ±15kV PDIP-16 RS232 ICs ROHSRenesas ElectronicsRS232 ICs
L78L05CZ
TO-920℃~+125℃ 100mA 30V 40uV 49dB@(120Hz) 5V Fixed Over Temperature Protection、Short Circuit Protection Positive TO-92 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsPower Management - Specialized
README
README.mdDigital Equipment LK201 keyboard emulator
This project allows a standard USB PC keyboard to be used as replacement for a DEC LK201 keyboard. It consists of a small circuit built around an Adafruit Trinket M0 Arduino processor, and software for that to implement a USB host driver for the USB keyboard and the LK201 communication protocol.
Subdirectory lk201 is the Arduino software. You can build it using the standard Arduino SDK, or use the prebuilt binary.
Subdirectory kicad is the circuit board design. You can view it using the open source KiCAD package.
Subdirectory doc contains several documentation files in MD format. File emulator.md describes the features of the emulator; kicad describes the board design and assembly information, and software describes the software and the load procedure. There are also two JPG files that show the circuit board.
File LICENSE is the open source license under which this emulator is released.
Parts
19| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 0.1uF | lk201_parts:C_Rect_L4.0mm_W2.5mm_P2.54mm | C1, C2, C3, C4, C5, C6, C7 |
| 1 | 1k | lk201_parts:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 2N3904 | lk201_parts:TO-92_Inline_Narrow_Oval | Q1 |
| 1 | 3.3k | lk201_parts:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
| 1 | ICL3232CPZ | lk201_parts:DIP-16_296_ELL | U3 |
| 1 | L78L05 | lk201_parts:TO-92_Inline_Narrow_Oval | U1 |
| 1 | PS1420 | lk201_parts:PS1420_buzzer | LS1 |
| 1 | RJ22 | lk201_parts:RJ22 | J1 |
| 1 | Trinket M0 | lk201_parts:Trinket_M0 | U2 |
The 15 most common of 19 parts.
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Questions
How big is the Lk201 PCB?
It measures 50.8 × 38.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Lk201 use?
19 parts, built around the ICL3232CPZ and L78L05CZ. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Lk201 KiCad files?
From the pkoning2/lk201emu repository on GitHub, at the commit this page was made from: the board is kicad/lk201/lk201.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Lk201 design in my own project?
Its repository publishes it under the BSD-2-Clause licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).